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1.
A new variant of the p-hub location problem with a ring backbone network for content placement in VoD services
Soumen Atta, Goutam Sen, 2021, original scientific article

Abstract: In this article, the single allocation p-hub location problem (SApHLP) with a ring backbone network for content placement in VoD services is proposed. In VoD services, a large volume of digital data is kept as data segments in spatially distributed hubs. In SApHLP, each user is restricted to be allocated only to a single hub, and here hubs form a ring backbone network. SApHLP jointly addresses (i) the locations of hubs, (ii) the placement of segments to hubs, (iii) the allocation of users to hubs as per their demands, and (iv) the optimal paths to route the demands from users to hubs. We have introduced network flow-based 3-subscripted and path-based 4-subscripted MILP formulations of SApHLP. This article presents a novel discrete particle swarm optimization (PSO)-based approach where factoradic numbers are used to encode solution. It also incorporates three problem-specific solution refinement methods for faster convergence. In this article, SApHLP instances are generated from a real-world database of video files obtained from a movie recommender system. The benchmark solutions are generated using IBM’s CPLEX optimizer with default settings and Benders decomposition strategy. The performance of the proposed PSO is compared with the benchmark results produced by CPLEX.
Keywords: Single allocation p-hub location problem, Ring backbone network, VoD services, Particle Swarm Optimization (PSO), Factoradics, CPLEX
Published in RUNG: 17.04.2023; Views: 727; Downloads: 0
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2.
On a class of d-division hypernear-rings
Sanja Jančić-Rašović, Irina Elena Cristea, 2018, published scientific conference contribution abstract

Keywords: hypernear-ring, distributivity, d-division
Published in RUNG: 23.06.2020; Views: 2315; Downloads: 0
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3.
Some new classes of hypernear-rings
Sanja Jančić-Rašović, Irina Elena Cristea, Jelena Dakić, 2020, published scientific conference contribution abstract

Keywords: hypernear-ring, defect of distributivity
Published in RUNG: 23.06.2020; Views: 2541; Downloads: 0
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4.
Weak embeddable hypernear-rings
Jelena Dakić, Sanja Jančić-Rašović, Irina Elena Cristea, 2019, original scientific article

Keywords: hypernear-ring, multitransformation, embedding
Published in RUNG: 07.08.2019; Views: 3173; Downloads: 94
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5.
Division hypernear-rings
Sanja Jančić-Rašović, Irina Elena Cristea, 2018, original scientific article

Keywords: hypernear-ring, defect of distributivity, d.g. hypernear-ring, division hypernear-ring
Published in RUNG: 02.11.2018; Views: 3072; Downloads: 0
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6.
Hypernear-Ring with a Defect of Distributivity
Sanja Jančić-Rašović, Irina Elena Cristea, 2018, original scientific article

Keywords: hypernear-ring, defect of distributivity, d.g. hypernear-ring
Published in RUNG: 16.07.2018; Views: 3343; Downloads: 0
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7.
A note on near-rings and hypernear-rings with a defect of distributivity
Sanja Jančić-Rašović, Irina Elena Cristea, 2018, published scientific conference contribution

Keywords: near-ring, hypernear-ring, defect of distributivity
Published in RUNG: 11.07.2018; Views: 3047; Downloads: 0
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